The ATW-T901a System 9 Frequency-Agile VHF Bodypack Transmitter from Audio Technica is a single-channel transmitter, although it is a frequency agile system, which means you can select any one of the four frequencies (169.505, 170.245, 171.045, and 171.905 MHz) and use up to four System 9 wireless systems at the same time, if each system is set to a different frequency.

The ATW-T901a bodypack transmitter can be used when paired with an optional System 9 receiver and a 4-pin lavalier microphone, headset microphone, or AT-GcW guitar/instrument input cable (sold separately) to capture audio for presentation, ENG, and sound reinforcement applications.

FEATURES:

Easy operation and clear, natural sound quality
4 selectable frequency-coordinated VHF channels
Reliable performance and durable construction

SPECIFICATIONS:

System
Wireless Technology
Analog UHF
RF Frequency Band
169 to 172 MHz
RF Bandwidth
3 MHz
RF Channel Scanning
Manual
Max Operating Range
200' / 61 m
Built-In Recorder
No
Timecode Support
No
Mobile App Compatible
No
*As of March, 2023: Check with manufacturer for the most up-to-date compatibility
Encryption
No
Modulation
FM
Transmitter
Transmitter Type
Bodypack
Input Level
Microphone
RF Output Power
10 mW
Audio I/O
1 x TA4/Mini-XLR 4-Pin Male Input
Locking Input Connector
Yes
Included Cable Connector
No
Phantom Power
Yes
Plug-In Power
Yes
Pad
No
Muting
No
Auto-Level Control
No
Memory Card Support
No
Signal Processing
No
Antenna
1 x Flexible Whip, Fixed
Power Requirements
Battery
Battery Type
2 x AA
Approx. Battery Life
8 Hours
USB/Lightning I/O
No
Display & Indicators
1 x LED (Battery Status, Sync)
Dimensions
2.8 x 4.1 x 1" / 70.2 x 103.7 x 24.9 mm
Weight
2.8 oz / 79 g (without Batteries)

Audio Technica ATW-T901A (Audio-Technica System 9 Bodypack Transmitter)